Remove all uses of toolkit_use_gtk in the gyp files.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 339 matching lines @@
             '../components/components.gyp:policy_test_support',
           ],
         }],
         ['safe_browsing!=1', {
           'sources/': [
             ['exclude', '^browser/extensions/blacklist_unittest.cc'],
             ['exclude', '^browser/extensions/fake_safe_browsing_database_manager.cc'],
             ['exclude', '^browser/extensions/fake_safe_browsing_database_manager.h'],
           ],
         }],
-        ['toolkit_uses_gtk == 1 or chromeos==1 or (OS=="linux" and use_aura==1)', {
+        ['OS=="linux"', {
           'dependencies': [
             '../build/linux/system.gyp:ssl',
           ],
         }],
         ['enable_printing==1', {
           'dependencies': [
             'service',
           ],
         }],
         ['enable_printing==0', {
@@ skipping 1907 matching lines @@
             'browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api_unittest.cc',
             'browser/notifications/login_state_notification_blocker_chromeos_unittest.cc',
             'browser/extensions/api/log_private/syslog_parser_unittest.cc',
           ],
         }],
         ['use_x11==1', {
           'dependencies': [
             '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
           ],
         }],
-        ['toolkit_uses_gtk == 1 or chromeos==1 or (OS=="linux" and use_aura==1)', {
+        ['OS=="linux"', {
           'dependencies': [
             '../build/linux/system.gyp:ssl',
           ],
         }],
         ['use_gnome_keyring == 0', {
           # Disable the GNOME Keyring tests if we are not using it.
           'sources!': [
             'browser/password_manager/native_backend_gnome_x_unittest.cc',
           ],
         }, {
@@ skipping 539 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }